Scroll type compressor

Details Scroll type compressor Scroll type compressor

1996-08-30

1997-06-17

Gluck, Richard E.

Pumps

With condition responsive pumped fluid control

Normally open bypass or relief passage closed by increased...

417308, 417310, F04B 4902

Patent

active

056392257

ABSTRACT:
In a scroll type compressor, when the operation of the compressor is stopped, compression chambers, for compressing a fluid, and a suction chamber are communicated with each other through bypass holes, and a spool valve to open and close the holes, so that the pressure in the compression chambers are lowered and the occurrence of a shock caused by a sharp increase in the load is prevented at the next start. Since the discharge pressure to drive the spool valve is introduced from a position upstream of the discharge valve, pressure is quickly lowered when the compressor stops, so that the spool valve can be quickly opened. Therefore, even when the compressor is frequently started and stopped, the occurrence of a shock can be positively prevented when the compressor starts.

REFERENCES:
patent: 4383805 (1983-05-01), Teegarden et al.
patent: 5074760 (1991-12-01), Hirooka et al.
patent: 5192195 (1993-03-01), Iio et al.
patent: 5193987 (1993-03-01), Iio et al.
patent: 5451146 (1995-09-01), Inagaki et al.

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